Enhancement of Photosynthetic Capacity in Spongy Mesophyll Cells in White Leaves of Actinidia kolomikta

doi:10.3389/fpls.2022.856732

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	Enhancement of Photosynthetic Capacity in Spongy Mesophyll Cells in White Leaves of Actinidia kolomikta
	Yu, Miao ; Chen, Li ; Liu, Dong-huan ; Sun, Dan ; Shi, Guang-li ; Yin, Yan 2; Wen, De-quan ; Wang, Zhen-xing ; Ai, Jun
刊名	FRONTIERS IN PLANT SCIENCE
	2022
卷号	13
关键词	white leaf photosynthetic capacity leaf structure chlorophyll fluorescence spongy mesophyll cells
ISSN号	1664-462X
DOI	10.3389/fpls.2022.856732
文献子类	Article
英文摘要	Considering that Actinidia kolomikta bears abundant white leaves on reproductive branches during blossoming, we hypothesized that the white leaves may maintain photosynthetic capacity by adjustments of leaf anatomy and physiological regulation. To test this hypothesis, leaf anatomy, gas exchange, chlorophyll a fluorescence, and the transcriptome were examined in white leaves of A. kolomikta during flowering. The palisade and spongy mesophyll in the white leaves were thicker than those in green ones. Chloroplast development in palisade parenchyma of white leaves was abnormal, whereas spongy parenchyma of white leaves contained functional chloroplasts. The highest photosynthetic rate of white leaves was ~82% of that of green leaves over the course of the day. In addition, the maximum quantum yield of PSII (F-v/F-m) of the palisade mesophyll in white leaves was significantly lower than those of green ones, whereas F-v/F-m and quantum yield for electron transport were significantly higher in the spongy mesophyll of white leaves. Photosynthetic capacity regulation of white leaf also was attributed to upregulation or downregulation of some key genes involving in photosynthesis. Particularly, upregulation of sucrose phosphate synthase (SPS), glyeraldehyde-3-phosphate dehydrogenase (GAPDH) and RuBisCO activase (RCA) in white leaf suggested that they might be involved in regulation of sugar synthesis and Rubisco activase in maintaining photosynthetic capacity of white leaf. Conclusions: white leaves contained a thicker mesophyll layer and higher photosynthetic activity in spongy parenchyma cells than those of palisade parenchyma cells. This may compensate for the lowered photosynthetic capacity of the palisade mesophyll. Consequently, white leaves maintain a relatively high photosynthetic capacity in the field.
学科主题	Plant Sciences
出版地	LAUSANNE
WOS关键词	ELECTRON-TRANSPORT ; GREEN ; VARIEGATION ; BRACTS ; RED ; ANTHOCYANINS ; PROTECTION ; PROFILES ; TISSUES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000802288100001
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/29002]
专题	中科院北方资源植物重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, State Key Lab Systemat & Envolutionary Bot,State K, Beijing, Peoples R China 2.Beijing Bot Garden, Beijing, Peoples R China 3.Jilin Agr Univ, Coll Hort, Lab Wild Fruit Physiol, Changchun, Peoples R China
推荐引用方式 GB/T 7714	Yu, Miao,Chen, Li,Liu, Dong-huan,et al. Enhancement of Photosynthetic Capacity in Spongy Mesophyll Cells in White Leaves of Actinidia kolomikta[J]. FRONTIERS IN PLANT SCIENCE,2022,13.
APA	Yu, Miao.,Chen, Li.,Liu, Dong-huan.,Sun, Dan.,Shi, Guang-li.,...&Ai, Jun.(2022).Enhancement of Photosynthetic Capacity in Spongy Mesophyll Cells in White Leaves of Actinidia kolomikta.FRONTIERS IN PLANT SCIENCE,13.
MLA	Yu, Miao,et al."Enhancement of Photosynthetic Capacity in Spongy Mesophyll Cells in White Leaves of Actinidia kolomikta".FRONTIERS IN PLANT SCIENCE 13(2022).